Respuesta :

mhanifa

Answer:

  • y = 25°

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From the right triangle we get the sum:

  • x + y = 90

From the exterior angle theorem we get the sum:

  • x + 2y = 115

Subtract the first equation from the second to get:

  • x + 2y - x - y = 115 - 90
  • y = 25